The use of cortical spreading depression for studying the brain actions of antioxidants

Nutritional Neuroscience
Rubem Carlos Araújo GuedesRanilson de Souza Bezerra

Abstract

We review the main adverse effects of reactive oxygen species (ROS) in the mammalian organism, introducing the reader on the worldwide problem of the ROS neurophysiological impact on the developing and the adult brain, and discussing the neuroprotective action of antioxidant molecules. We briefly present the electrophysiological phenomenon designated as 'cortical spreading depression' (CSD), as a parameter of normal brain functioning. We highlight recent electrophysiological advances obtained in experimental studies from our laboratory and from others, showing how to investigate the ROS effects on the brain by using the CSD phenomenon. Under conditions such as aging, ROS production by photo-activation of dye molecules and ethanol consumption, we describe the effects, on CSD, of treating animals with (1) antioxidants and (2) with antioxidant-deficient diets. The current understanding of how ROS affect brain electrophysiological activity and the possible interaction between these ROS effects and those effects of altered nutritional status of the organism are discussed.

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Citations

Mar 2, 2016·Alcoholism, Clinical and Experimental Research·Ricardo Abadie-GuedesRubem Carlos Araújo Guedes
Oct 14, 2014·Brain Research·Andréia Albuquerque Cunha Lopes-de-MoraisRubem Carlos Araújo Guedes
Aug 9, 2017·Nutritional Neuroscience·Rosângela Figueiredo Mendes-da-SilvaManuella Batista-de-Oliveira-Hornsby
Sep 21, 2018·Brain Research Bulletin·Rosângela Figueiredo Mendes-da-SilvaRubem Carlos Araújo Guedes

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